The foreign ministers of Egypt, Turkey, Pakistan, and Saudi Arabia convened in Cairo on Sunday for the fourth meeting of their "Regional Four" (R-4) diplomatic grouping, welcoming the recently signed Islamabad Memorandum of Understanding between the United States and Iran as a "constructive step towards de-escalation." In a joint statement, the quartet urged a "swift and successful" conclusion to the subsequent phase of negotiations — which aim to produce a lasting, verifiable agreement covering Iran's nuclear programme and the reopening of the Strait of Hormuz — and praised Pakistan's instrumental role in brokering the deal, alongside co-mediator Qatar. The meeting took place on the same day that US and Iranian delegations gathered in Switzerland for high-level technical talks, with the ministers also reaffirming their support for Palestinian statehood and calling for a just resolution to the conflicts in Gaza and Lebanon.